Rotary etching-machine.



r Patented July 3|, I900. NI. W. GLEASON. ROTARY ETGHING MACHINE,

- (Application filed Mar. 31, 1599.1

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a 3 W W H XE m a B c g w a n n J No. 654,62l.

(No Model.)

Il- IIIHHI WITNESSES jrw M12 2? Fries.

PATENT MARSHALL W. GLEASON, OF NEW YORK, N. Y,

RC'l'ARY ETCHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 654,621, dated July 31, 1900.

Application filed March 31, 1899.

To all whomit may concern:

Be it known that I, MARSHALDWILFRED GLEASON, a citizen of the United States, and a resident of New York, (Brooklyn,) in the county of Kings and State of New York, have invented certain new and useful Improvements in Rotary Etching-Machines, of which the following is a specification.

My invention relates to an improvement in rotary glass-etching machines uponwhich hollow articles of glassware-such as globes, shades, goblets, tumblers,and similar waresinay be placed for white-acid etching, the object being to provide a means for decorating such wares by etching without waxing-in or protecting the interior of the glassware,

To more fully describe my invention, I refer to the accompanying drawings,which form part of this specification, in which Figure 1 represents a two-spindle machine in elevation embracing my improvement, one spindle being shown in section; and Fig. 2 is a plan view of Fig. 1, the table being broken away to show the transmission used for rotating the spindles.

Similar characters of reference refer to similarparts in the two views.

A is a table having strips a secured around the upper edges, so as to form a valley that the drippings of the etching-acid will not run off on the floor and be wasted. The table and strips are covered by sheet-lead, gutta-percha, or other protective sheathing An opening 0 is made near one corner of the table in the valley, the opening communicating with a leader 6, through which the waste acid will run into a vessel to be saved and used over again.

Any number of upright spindles can be used in my machine. I show two suchspindles, the description being applicable to any required number. A combined support and bearing for the spindle consists of afianged hub 1, which is firmly bolted down upon the table A, so that there will be no chance for leakage between the fiangeiand the lead b,- upon which it rests. A hole corresponding with the hole in the hub, but a little larger in diameter, iscut through the lead and table, and a spindle 2 of suitable length is passed through. A collar 3, held in place by a setscrew, (not shown,) is slipped over the spin- Serial No. 711,201- (No model.)

dle and fastened thereto. This collar bears upon the upper edge or face of the hub 1, thus keeping the spindle in its place at the desired height. An inverted cup 5, having a central perforation, is passed down on the spindle and protects the collar and hub from the drippings of acid. A chuck or block 6, preferably of wood, having the general contour of the inside of the article to be etched, is fastened to the upper end of the spindle. On the bot-tom of the spindle beneath the table a grooved pulley 7 is fastened. When a plurality of spindles are used and if desired to rotate them all in one direction, I make use of an idler 8, secured also beneath the table in a proper place to be on a line with the belting which transmits the power to the spindles. The idler-s are not essential, however. The transmission may be made in any preferred manner. I show a counter-shaft 9 under the table, having a flat belt-driven pulley 10 and a grooved driving-pulley 11, the belting being shown in dotted lines. It is obvious that any other method of transmission of power which rotates the upright spindles may be used. I prefer to put the trans mission beneath the table to protect it from the etching-acid.

D is a glass globe as used for illumination.

Such being the construction, the operation is as follows: When power is applied to the driven pulley 10, the spindles and idler rotate. The glass article to be etched is" placed upon the chuck and so-called white acid is applied by means of a soft wide camelshair. brush. By rotating the spindle slowly and by applying the acid evenly overthe surface of the glass article the acid will evenly frost the glass, care being taken not to permit any acid to run down on the inside of the glass through the top when the same has an opening, as is the case in common gas-globes. Any superfluous acid will drip or be thrown off from the lower end of the glass, and if the chuck is less in depth than the article to be etched the lower edge will extend below the chuck and there will be no danger of the chuck becoming saturated with acid. The latter will drip from the lower edge of the glass on the table and, running down through the leader, is caught up in a vessel placed under the table and used over again. The cup 5 protectsthe bearing and hub in which the spindles. journaled ins'aid table, and project- 20 spindle rotates, and if the flange of the hub ing above and below the same, pulleys caris tightlybolted to the table the transmission ried upon the lower ends of said spindles, a beneath the table will be fully protected band connected to said pulleys to revolve the i 5 against spattering of the acid. In this mansame, a horizontal shaft mounted in bearings nor white acid etching can be quickly and secured to -the',lower portion of the table, a 25 l cheaply done, and as the glassware is not im-v pulley carried upon said shaft andadapted mersed in acid or handled in any manner to transmit power to said spindles through i which would cause acid to run down on the the band, a collarsurrounding each of said 1o inside there is no necessityto wax-in or prospindles, an inverted cup to protect said coltect the inside of the glass article which is'to hr, and a chuckto support glassware carried v3o a be etched. Thechuck may be coated with upou-the-upperendof-each spindle. I

waxor other, protective material, p Signed at Brooklyngin the county-of Kings Having fully described myinventio'mwhat aaiasmw of New York, this 29th day of Oc- '15 I claim as new, and desire to secure by Letters tober, A. D.' 1898. i

Patent of the United States, is- "f i MARSHALL W; GLEASON.

;'The herein-described machine for etching I Witnesses: upon glass, the combination with a suitable g j- I E. WHITNEY, supporting-table, of a plurality of upright JOHN A. MOKAYJ 

